Sökning: "östersjön"
Visar resultat 1 - 5 av 90 avhandlingar innehållade ordet östersjön.
1. Silicon cycling in the Baltic Sea : Trends and budget of dissolved silica
Sammanfattning : The dissolved silicon (DSi) has a crucial role for growth of a large group of primary producers – diatoms and, hence, impact on functioning of the aquatic food web. This thesis contributes to an increased understanding of the modifications of the DSi cycling in the Baltic Sea. LÄS MER
2. Spår av hav, yxa och penna : historiska sjöolyckor i Östersjön avspeglade i marinarkeologiskt källmaterial
Sammanfattning : .... LÄS MER
3. The importance of biodiversity for ecosystem processes in sediments : experimental examples from the Baltic Sea
Sammanfattning : Aquatic sediments are, by surface, the largest habitat on Earth. A wide diversity of organisms inhabit these sediments and by their actions they have a large influence on and also mediate many ecosystem processes. LÄS MER
4. Excessive Seas : Waste Ecologies of Eutrophication
Sammanfattning : This dissertation researches how perspectives in western industrial societies communicate about and give meaning to environmental degradation through case studies on the causes and effects of cultural eutrophication—namely nutrient pollution, algal blooms, and dead zones—in the Baltic Sea. Utilizing this approach, this dissertation addresses the ecological problems of cultural eutrophication in marine ecosystems by exposing normative claims humans make about the Baltic Sea and its contents as well as detailing how seas that exceed human expectations may offer insights into negotiating differing perspectives, discrepancies in power, and ways of being among humans and non-humans in marine environments. LÄS MER
5. Thiamin (vitamin B1) in the aquatic food web
Sammanfattning : Thiamin (vitamin B1) is required for several life-sustaining processes in most organisms and cells, e.g. in the conversion of food to energy. It also serves as an antioxidant and is important for proper nerve signaling. LÄS MER